Induction electricity meter



April 3, 1928.

' A. L. EMENS INDUCTION ELECTRICITY HETER Filed Dec. 24. 1926 Z L53 220672207 fllbert L.E1nens.

Patented Apr. 3, 1928. i

ALBERT L. EMENS, or LA FAYETTE, INDIANA, IASSIGNOYR TQDUNCAN ELECTRIC anraorcnme COMPANY, or LA FAYETTE, INIJZAIQ'A, A CORPORATION 01? ILLINOIS.

nnUcTIon EL CTRICITY METER.

. Application filed December 24, 1926; SerialNc. 156,880.

My invention, in general, relates'to an induction electricity meter employing a supporting base having a forwardly projecting wall to constitute said base a chamber in which the current andpressure electro-magnets are disposed, a spindle rotatably supported upon said base in front of said magnets, and am'etallicdiscin inductive rcla tion' to said magnets.

llly invention also relates, in particular, to an induction electricity meter employing a terminal chamber connected with and extending outwardly from the-aforesaid-wall and provided with a lid having means for holding it in'closed-position. Such a me-ter 'otthe prior' art was provided with a cover seated upon the front'portion of 'the'forwardly projecting wall'ofth'e base and serving'to enclose the spindle, the damping magnet system, the counting train,'and the spindle carrying the metallic" disc or armature, these parts being locatedini ront of the current and pressure electro-magnets oi the meter. It was possible for a person desiring to prevent the operation of such'a meter for the purpose of obtaining current withoutcost to insert a strip of metal between the coverand its seat to an extent to engage the armatur disc to prevent its rotw on. Iiiaecordanc'e with my invention, I continue the cover skirt rearwardly of the front portion of the forwardly projectingwall of the meter base which is usually the place'ot engagement-oi the cover to prevent access to the armature, this continued portiouot the cover skirt pi'eierably'b'e ,3 upon the x terior of and surrounding the projecting wall oi the ineter-basel i here the skirt continuation surrounds the forwardly projetting wall of the base it desiral'ily extends into close proximity to the terminal chamher to enable this chamber to cooperate vith the cover skirt continuation for the purpose stated. lhe cover skirt continuation is desirably continued rearwardly beyond the front of the terminal. chamber where it does not overlie the terminal chamber. The seat for the cover is not only guarded by the cover skirt in extending rearwardly thereof but the cover skirt, being preferably of glass, guards against. the drilling of holes where access could be had to moving meter parts.

I will explain my invention more fully by reference to the accompanying drawings in which Fig. 1 is a front elevation of a projecting wall '2.

1 non-magnetic meter with the cover thereon shown partial-' ly in elevation and partially in section with a portion broken away; Fig. 2 is a'sectional view on line 2'-2 of Fig. 1; Fig. 3 is a'sectiona-l view, on a larger scale, on line 3-3 ptFigxl; and Fig. 4 is a pcrspcctivcview of the cover.

The meter base is inclusive of a plate 1 formed with a forwardly promoting wall to constitute-a chamber, the base having a perforated ear dextcnding from the top tiereof for 'receiving'a mounting screw 4. which ispassed through the car into the wall '5 or-othersupport. Other screws (3 {are passed through the lower portion of the base into the support 5. The base is-usually formed of iron andthe chamber defined thereby is commonly closed by an iron wall 7 whichis suitably joined to and within said The pressure electroinagnet 8 and the current clectro-magnet 9 are anchored to and upon the rear oi? the wall 7 by'meansof screws 10 passing through the cores ot'the electro-magnets into the .wall 7,.there being distance preserving sleeves 11 surrounding the screws and interposed'between the magnet cores and said! wall. The electromagnets are upon the'rear side of the w ll'7,'be1ng surrounded by the wall 2 andenclosed within the chamber defined by said wall. The upright meter the front; thereoiiw The spindle carries, a metahc: armature disc 15 which extendsthrough an opening '16 in the walli' and into the space between the poles ot'the magnets to be in inductive relation theret The spindle is provided-with a worm 17 inmesh with the finitialwhecl 18 of agear'train which operates the indicators of the meter, in a manner well known. This gear train is supported by a permanent magnet 19 and this magnet in turn is held by the clips 20 which are carried by and project forwardly from the wall 7.'

A cover 21, commonly of glass, has a shoulder 22 which is seated upon the front portion of the wall 2, a sealing gasket 23 being interposed betwen the cover and said wall The'skirt of the cover has acontinuation 24: which extends sufiiciently toward'the rear of the meter base to prevent the insertion of a meter stopping implement pastthe shoulder 22. The terminal chamber 25 is connected with and extends downwardly or outwardly from said wall 2, in accordance with common practice, this terminal chamber carrying the terminals for the electro magnets with which terminals the circuit wires 26 are also connected. The terminal chamber is provided with a lid 27 which is hinged or pivoted at 28 and fastened at 28. Where the skirt continuation 2418 upon the exterior of the meter, it closely approaches the front of the terminal chamber 25 which cooperates with the cover skirt portion 2a for the purpose stated. This cover skirt portion overlies said lid to aid in holding it closed and is elsewhere extended rearwardly of the front of the terminal. chamber there to more effectively fulfill its purpose.

The cover is held in position by two rods 29 whch are carried by the base and project forwardly therefrom through the cover. Two nuts 30 are threaded upon these rods and press upon the cover to hold it upon its seat. The holes in the cover through which the rods 29 pass are inwardly flared at their inner ends as indicated at 31. Bushings 32 are received in these holes and are furnished with flanges 33 at their outer ends against which the inner ends of the nuts 30 are pressed. Washers 34, preferably of felt, surround said bushings and are interposed between the cover and said flanges. The inner ends of the bushings are flared or laterally extended, as indicated at 32 toiit the flaring inner ends of the holes in the cover through which the rods 29 are passed.

Having thus described my invention, 1 claimj 1. In an induction electricitymeter, the combination with a supporting base having a forwardly projecting wall to constitute said base a chamber; of a terminal chamber connected with and extending outwardly from said wall; current and pressure electron'iagnets disposed within the first chamber; a spindle rotatably supported upon said base in front of said magnets; a metallic disc upon said spindle and in inductive relation to said magnets; and a meter cover upon the base and having a skirt continuation surrounding said forwardly projecting wall and having one portion extending nearly'to the front of the terminal chamber and a remaining portion extending rearwardlybeyond the front of said terminal chamber.

.2. In an induction electricity meter, the con'ibination with a supporting base having a forwardly projecting wall to constitute .said base a chamber; of terminal chamber connected with and extending .outwardly the base and having a skirt continuation surrounding said forwardly projecting wall and having one portion extending nearly to the front of the terminal chamber. I

3. In an induction electricity meter, the combination with a supporting base having a forwardly projecting wall to constitute said base a chamber; of a terminal chamber connected with and extending outwardly from said wall; current and pressure electromagnets disposed within thechamber;la spindle rotatably supported upon said base in front of said magnets; a metallic disc upon said spindle and in inductive relation to said magnets; and a meter cover upon the base and having a skirt continuation which has a portion extending rearwardly beyond the front of said terminal chamber.

4. In an induction electricity meter, the

combination with a supporting base having.

a forwardly projecting wallto constitute said base a chamber; of a terminal chamber connected with and extending outwardly from said wall; current and pressure electromagnets disposed within the chamber; a spindle rotatably supported upon said base in front of said magnets; a metallic disc upon said spindle and in inductive relation to said magnets; and av meter cover upon the base and having a skirt continuation extending rearwardly beyond the front of said projecting wall to the region of the terminal chamber. I

In witness whereof, I hereunto subscribe my name.

ALBERT L. EMENS. 

